Steel sheet and method for producing the same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12209299
APP PUB NO 20220235442A1
SERIAL NO

17442744

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Abstract

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The steel sheet has a steel microstructure containing ferrite: 6% to 90% by area, a microstructure composed of one or more of upper bainite, fresh martensite, tempered martensite, lower bainite, and retained γ: 10% to 94% by area in total, and retained γ: 3% to 20% by volume, a ratio (SUB/S2nd)×100(%) of an area ratio SUB of an upper bainite with a width in the range of 0.8 to 7 μm, a length in the range of 2 to 15 μm, and an aspect ratio of 2.2 or more in contact with retained γUB with a grain width in the range of 0.17 to 0.80 μm and an aspect ratio in the range of 4 to 25 to an area ratio S2nd of the microstructure composed of one or more of upper bainite, fresh martensite, tempered martensite, lower bainite, and retained γ ranges from 2.0% to 15%.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 100-0011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akimoto, Hiroyuki Tokyo, JP 14 212
Kitani, Yasushi Tokyo, JP 16 24
Matsui, Yoichiro Tokyo, JP 10 0
Ono, Yoshihiko Tokyo, JP 72 419

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